idea: doubletap

[canedoly]

Is there any possibility to add doubletap?
Barely saw any cheats in gmod with dt and looking at other source engine games where its being used (csgo, tf2), its pretty op and looking at the fact that gmod has way more weapons (because of addons) the use for it could be better.
Some info that might help 1 & 2 And also, it seems to be better to detour cl_move idk why